Midafternoon re-energizing breath. Sitting, rapidly inhale through your nose and exhale through puckered lips — about three times a second — until you are out of steam. Your diaphragm should go up and down. It’s tough, but try to do it for a full minute.

Sweet-dreams breathing. Stretch out and put your right hand on your upper chest and your left hand over your bellybutton. Inhale and let the air fill your belly and push it out so it’s big and full. Then slowly and evenly exhale and let your belly button sink way down to your spine. Don’t force it; just relax. Easy in and full-bellied; easy out and flat-bellied. Repeat 10 times. Z-Z-Z!